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Both Labour and the Liberal Democrats have already revealed they will seek to meddle with the Government’s Bill in the House of Lords, having failed in a bid to add conditions to the legislation in the House of Commons last week.

The Government does not hold a majority in the House of Lords, meaning the Bill’s passage is likely to prove more complicated when debated by unelected peers.

But Change Britain have launched a campaign for peers to be shown the strength of public support for the Government to be allowed to get on with Brexit unencumbered.

They have highlighted how peers previously blocked an attempt to get the promise of an EU referendum written into law in 2014.

What Theresa May's 12-point Brexit plan really means

It's finally here.

Continued cooperation with the EU to tackle terrorism and international crime.

Earlier this month, leading Remain campaigner Lord Mandelson was handed France’s top honour for services to the EU.

Prior to the EU referendum, Lord Patten described the Brexit campaign as “sour, xenophobic English nationalism”.

Lord Kinnock has warned an EU exit deal could take a decade to negotiate while he has claimed the Leave result was won through “falsehood and prejudice”.

Brexit Secretary David Davis has told peers to do their “patriotic duty” and pass the Article 50 Bill unamended, although Downing Street has backed away from threats the House of Lords could be abolished if it doesn’t support the legislation.